| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Directed molecular orientation of pentacene on amorphous silicon oxide substrates using scratch lithography for OTFT |
| 초록 |
We introduce a new strategy for control of the in-plane orientation of pentacene molecules using nanometer-scale periodic groove patterns as an alignment layer. The process is based on the integration of scratch lithography for OTFT of the amorphous silicon oxide substrates and growth of the pentacene film by high-vacuum sublimation on the fabricated pattern. With this technique, we can control the distribution and size of the nanometer-scale substrate relief to control the morphology and orientation of the pentacene. The nanometer-scale groove patterns have been shown to control the in-plane orientation of the pentacene molecules. Compared to pentacene films that are not aligned, enhanced field effect mobility of 0.302 cm2 V-1 s-1 has been achieved when the optimal p-orbital overlap direction is parallel to the direction of the current flow. The ability to control the molecular ordering at a local scale opens up important perspectives for high-performance OTFTs. |
| 저자 |
김수경1, 김아련1, 김진수1, 장광석1, 가재원1, 류주환2, 김윤호1
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| 소속 |
1한국화학(연), 2충남대 |
| 키워드 |
pentacene; scratch lithography; anisotropic orientation; self-assembly; OTFT
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| E-Mail |
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